Universal Gravitation
Objectives
* Compare and contrast gravitational force vectors as mass and distance are changed. (Explorations 1, 2, and 3) * Discover how changes in the distance between two objects affects the gravitational force between them. (Explorations 1, 2, and 3) * Describe how changes in the masses of two objects affects the gravitational force between them. (Explorations 1, 2, and 3) Description of Activity

In this activity, you will explore how distance and mass affect the gravitational force between two objects. You will select one of three locations to work within: a 9 m2 room, a 9 × 104 m2 city block, or a 9 × 1022 m2 region of space. You will also change the mass of each object as well as manipulate the positions of both objects. For purposes of this simulation, masses will be represented as spheres and the distance between them will be the distance between their centers. Jump Start

1. What is mass? Mass is a coherent, typically large body of matter with no definite shape. 2. Describe gravitational force. The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them". 3. How can you tell if one variable is directly proportional to another variable? One variable is directly proportional to another if increasing/decreasing the first variable increases/decreases the second variable by the same proportion. 4. How can you tell if one variable is inversely proportional to another variable? As the first variable increases the second variable decreases or vice versa means one variable is nversely proportional to another. 5. Write Newton’s law of universal gravitation as an equation. Exploration 1: Gravitational Interactions in a Room...

...Newton’s Laws of Cooling & UniversalGravitation
Law’s of Cooling:
Newton's law of cooling is used measure the temperature change of an object of some
temperature placed in a place of a different temperature. The law states that
dT/dt= k(T-R)
where T is the temperature of the object at time t, R is the temperature of the surrounding of the
place (constant) and k is a constant of proportionality. This law states that the rate of change of
temperature is...

...Assignments in Science Class IX (Term I)
10a
Gravitation
IMPORTANTIMPORTANT NOTES NOTES IMPORTANT NOTES
7. Acceleration due to gravity of the Earth : The acceleration with which the bodies fall towards the earth is called acceleration due to gravity. Its average value is 9.81 ms–2. 8. Variation of acceleration due to gravity. (i) Acceleration due to gravity changes with the change in distance from the centre of the earth. (ii) Acceleration due to gravity is maximum at...

...Newton's Law of UniversalGravitation
Gravity if one of the four fundamental forces in the universe. Though
the fundamental principles of it eluded scientists until Sir Isaac Newton was
able to mathematically describe it in 1687 (Eddington 93). Gravity plays a
serious part in everyday actions as it keeps everything on the ground; without
gravity everything would be immobile unless a force was applied (then it would
move infinitely because there would be no...

...There is a popular story that Newton was sitting under an apple tree, an apple fell on his head, and he suddenly thought of the Universal Law of Gravitation. As in all such legends, this is almost certainly not true in its details, but the story contains elements of what actually happened.
What Really Happened with the Apple?
Probably the more correct version of the story is that Newton, upon observing an apple fall from a tree, began to think along the...

...7.1 Newton’s Law of UniversalGravitation
Newton’s Law of UniversalGravitation states that:
Every particle attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Consider two particles of masses m1 and m2 separated by a distance r. Each will exert a force F on the other, given by
where F :...

...Circular Motion and Gravitation
Circular motion is everywhere, from atoms to galaxies, from flagella to Ferris wheels. Two terms are frequently used to describe such motion. In general, we say that an object rotates when the axis of rotation lies within the body, and that it revolves when the axis is outside it. Thus, the Earth rotates on its axis and revolves about the Sun.
When a body rotates on its axis, all the particles of the body revolve – that is, they move in...

...There is no universal category of Childhood. Discuss.
To have a universal category of Childhood, all first hand and second hand experiences of Childhood must be the same to a certain degree. The term “universal” demands that all definitions and takes on the term must be the same without any equivocation. The interest in the concept of Childhood in terms of Sociology has increased massively since the 1980’s (Mayall 2002, James et al. 1998, Prout...

...Some poets look from the particular to the universal to explore human experience. Discuss poems from at least two poets in relation to this statement, considering also the ways in which they achieve their effects.
Some poets reflect on the particular and the universals of the world to unveil certain aspects of human experience. Through the use of particular and universal ideas along with intensive visual and kinesthetic imagery, the reader is...